Door-operating mechanism



I B. M. WARNER. 7 DOOR OPERATING MECHANISM.

APPLICATION FILED JAN. l4, I918.

1 ,350,688 Patented Aug. 24, 1920.

2 SHEETS-SHEET l- Invent 5r. Bani/Y7 u arner.

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B. M. WARNER DOOR OPERATING MECHANISM APPLICATION HLED JAN. H, l9i8.

m. 92 1T 4. m u m5 M m 'from a point at a BURT M. WARNER, OF CHICAGO, ILLINOIS.

DOOR-OPERATING MECHANISM.

Specification of Letters Patent. Patented Aug 24 1920.

Application filed January 14, 1918. Serial No. 211,736.

To all 1072 0221 it may concern.-

Be it known that L'Bnnr M. \VARNER, a citizen of the United States, residin at Chicago, in the county of Cook and gtate of Illinois, have invented a certain new and useful Improvement in Door-Operating Mechanisms, of which the following is a specification.

lily invention relates to an improved form of door operating mechanism, by which doors generally mav be opened and closed istance from the doors. More specifically, my invention relates to an improved form of electrical mechanism for opening and closing doors by the operation of an improved form of switching mechanism, comprising parts simple in construction and effective in operation for controlling the switching mechanism by means of control circuits extending to various points of control as desired.

Heretofore in the art it has been proposed to operate doors from a distance by means of electric motors controlled by switching mechanism and relay mechanism, with the result that the system employed is complicated. and readily becomes disordered. In carrying out my invention I employ a single switching mechanism for controlling the motor circuits, which switching mechanism is operated directly bv electro-magnetic devices, preferably in the form of solenoids, the circuits for said electromagentic devices being controlled from any desired locations by suitable push-buttons. By this means I am able to open or close the door or doors at will and to interrupt the opening or closing operation at any desired point with simple and positive mechanism which is durable and which does not need frequent attention and repair.

My invention will be best understood by reference to the accompanying drawings showing a preferred embodiment thereof, in which- Figure 1 shows in diagrammatic view a pair of doors and the devices and circuit connections employed for operating the doors,

Fig. 2 is a diagrammatic view of one of the limit switches employed,

Fig. 3 is a detailed view of the switching mechanism controlling the motor operation, this view being a plan View,

Fig. 4 is a side elevation of the parts shown in Fig. 3, and

Fig. 5 is an end elevation of the parts shown in Fig. 3.

Similar numerals refer to similar parts throughout the several views.

As shown in Fig. 1, two doors 10 and 11 are hinged at 12 and 1.3 respectively to open and close a corresponding doorway and said doors are provided at their upper edges with guide rods 1 1 and 15 respectively, and on these guide rods eyes 16 and 17 respectively are mounted so that they may slide longitudinally thereon. Eyes 16 and 17 are connected by an endless operating cable 18 in the following manner: Cable 18 is wound around an operating drum 19 on a shaft 20 and from said drum extends'over a guide sheave 21 and is then rigidly connected to the eye 16, after which it passes over the guide sheaves 22, 23, 2-1 and 25 in the order named, after which it is rigidly secured to the eye 17 and then passes over the guide sheaves 26 and 27 and back to the drum 19. The guide sheaves 21, 27 and 23, 25 are located at a sufficient distance from the wall in which the doorway is formed so that when the cable is operated in either direction by the turning of the drum 19 a pull is exerted on each door in one direction or the other, tending to move the door on its hinges. As will readily be understood, the guide sheaves are employed simply for the purpose of properly directing the cable so that when the drum 19 is rotated in one direction, as, for example, toward the observer for the arrangement shown in Fig. 1, both the doors will be opened, the eyes 16 and 17 sliding upon the guide rods during the operation, and for the reverse direction of motion of the cable 18 the doors will be closed. It will be understood that while swinging doors are shown as operated by my system, the doors thus controlled may be of any desired type and that any desired number of doors may be operated in this manner by suitably locating the guide sheaves and connecting the cable to the parts connected with the door or doors.

For the particular embodiment of my invention shown in Fig. 1, a stud 28 is mounted on the door 10 so that when the door is in its wholly closed position the stud engages and operates a limit switch 29 which serves to interrupt the circuit of the motor effective in closing the door, and when the door is in its wholly opened position said stud engages a second limit switch 30 and by operating it opens the circuit of the motor efiective in opening the door.

In Fig. 1 the line wires for operating the system are shown at 31 and 32, and these wires are connected by wires 33 and 34 respectively with the switching mechanism 35 indicated in said figure diagrammatically and which is connected by wires 36, 37; 38 and 39 with the motor 10 employed to operate the doors. carries a worm 4:2 meshing with a worm wheel 13 carried by the shaft 20, as a result oi which the drum 19 may be operated in one direction or the other, depending on the direction ofthe rotation oi" the motor. The limitswitch 29 is connected with the switching mechanism by wires 44 and 45 and the limit switch 30 is connected with the switching mechanism by wires 46 and at. The switching mechanism is operated in a manner to be described by means of the control wires 48, 49, 50 and 51 extending therefrom to any desired points of control, each of which is equipped with a push-button systern as indicated at 52, 53 and 54. a

The limit switches 29 and 30 may be of any desired construction and I find that a type of switch which answers admirably is that shown in Fig.2, in which the switch 29 is shown as comprising a knife switch 29 contained in a protecting box 29 through which the operating handle 29 projects, to be engaged by the stud 523. An insulating plunger 29 engages the switch blade, and under the action of a spring29 contained in the housing 29, maintains the switch in its closed condition unless the handle is operated to open the switch.

As shown in Fig. 3, the switching mechanism consists oi? a cylinder of insulating material mounted to rotate in bearings and 57 carried by a base 58. The cylinder has secured thereto the switch blades 59, 60, 61, 62, 63 and 6% for engaging the switch contacts 65, 66, 67, 68, 69 and 70, the contacts 65, 66 and 67 being engaged when the cylinder is turned in one direction, at which time the other contacts are disengaged, and

the contacts 68, 69 and 70 being engaged when the cylinder is turned in the other direction, at which time the contacts 65, 66 and 67 are disengaged. The construction is such, as indicated in Fig. 4, that for the mid-position of the cylinder, in which position the blades carried thereby are horizontally disposed, all o1 said blades are disengaged from their respective contacts.

The cylinder 55 is provided at one end with an operating bar 71 rigidly secured thereto and extending in opposite directions The shaft ll of the motor therefrom, and at the ends of this bar cores 72 and 73 of solenoids 74C and 75 respectively are pivoted, as a result of which when the solenoid 7 1 is energized the cylinder is rotated in one direction engaging one set of contacts and when the other solenoid is energized the cylinder is rotated in the other direction, engaging the other set ofcontaots. The operation of either solenoid leaves one or the other set of contacts in engagement when the solenoid is subsequently deenergized, and to move the cylinder and its switch-blades to their mid-position, disengaging all of the contacts, the following mechanism is employed: A yoke 76 is pivotally supported at 77 and 78 so that the ends of the yoke extend under the bar 71 and the opposite portion or end or the yoke is pivotally engaged by the core 79 of a solenoid 80, as a result of which when the solenoid 80 is energized, one or the other of the forked ends of the yoke 76 engages the under surface of the bar 71 and rotates the 1 er and the cylinder from their operated position to their m1d-pos1t1on, thus disengaging the contacts previously engaged and yet not moving the cylinder far enough to engage the other contacts.

The circuit connections 0]": the switching mechanism are as follows: The line wires 33 and 34 are connected with the binding posts 81 and 82; the wires 4% and 45, extending to the limit switch 29, are connected with the binding posts 83 and 8-1, wireseto and 47, extending to the limit switch 30, are connected with the binding posts 85 and S6 the binding post 81 is connected by wire 87 with switch blade 59 through a flexible cenductor to permit turning of the switch without interrupting said connection; the binding post 82 is connected with the binding post 8 1 and also with the binding post 85 by wires 88 and 89 respectively; the binding post 83 is connected by wire 90 through a flexible conductor with the switch blade 61; the binding post 85 is connected by wire 91 with one terminal of each of the solenoids 7e, 75 and 80; the binding post 86 is connected by wire 92 through a flexible conductor with the switch blade 62; the switch blades 60 and 63 are connected together by a wire 93 the contacts 65 and '69 are connected together with a wire 94, the contacts 66 and 68 are connected together by a wire .5 and the contacts 37 and 70 are connected together by a wire 96; the wires 36, 37, 38 and 39 extending to the motor are connected with the binding posts 97, 98, 99 and 100 respectively, which in turn are connected by wires 101, 102, 103 and 104 with the contact 67, switch blade 60 and contacts 66 and 65 respectively; the base 58 of the switching mechanism also supports binding posts 105, 106, 107 and 108 connected by wires 109, 110, 111 and 112 respectively with the other terminals of the solenoids 7 5, 80, 74 and the wire 87, and the close the doors from any of the control stasaid binding posts are connected respectively tions, the ush-button 114 is depressed, closwith the control wires 51, 50, 49 and 48. ing the fo lowing circuit: line wire 31, wire At each control station push-buttons 113, 33, binding post 81, wire 87 wire 112,'bind- 114 and 115 are located, similar terminals ing post 108, wire 48, wire 116, push-button of said buttons being connected together and 114, wire 119, wire 49, binding post 107, Wire by wire 116 with wire 48. The other ter- 111, solenoid 74, wire 91, binding post 85, minals of said buttons are connected respecwire 89, binding post 82, wire 34, back to tively by wires 117 119 and 118 with wires line wire 32, thus energizing solenoid 74 and 51, 49 and 50. rotating the cylinder 55 to bring the contact As a result of the circuit connections deblades 59, 60 and 61 into engagement with scribed, when at any control station a pushthe contacts 65, 66 and 67 respectively. As button 113 is depressed, assuming that the a result of this position of the cylinder and cylinder and its switch blades are in midthe contact blades carried thereby, a circuit position, current from the line wires takes is closed as follows through the motor windthe following course: line wire 31, wire 33, ings: line wire 31, wire 33, binding post 81, binding post 81, wire 87, wire 112, binding wire 87, contact blade 59, contact 65, wire post 108, wire 48, wire 116, push-button 113, 104, binding post 100, wire 39, through the wire 117, wire 51, binding post 105, wire 109, armature winding of the motor in the same solenoid 75,wire 91,binding post 85,wire 89, direction as before and back through wire 35 binding post 82, wire 34, back to line wire 38, binding post 99, wire 103, contact 66, con- 32, thus energizing the solenoid 75 and rotact blade 60, wire 102, binding post 98, wire tating the cylinder 55 to bring the contact 37, to the field winding of the motor and blades 62, 63 and 64 into engagement with through said winding in the opposite of the the contacts 68, 69 and 70 respectively. As direction above traced to the wire 36, binda result of this position of the cylinder 55, ing post 97, wire 101, contact 67, contact current is caused to take the following blade 61, wire 90, binding post 83, wire 44, course through the motor: line wire 31, to and through the limit switch 29, wire 45, wire 33, binding post 81, wire 120, contact binding post 84, wire 88, binding post 82, blade 64, contact 70, wire 96, contact 67, wire 34, back to line wire 32. As a result wire 101, binding post 97, wire 36, to and of the reversing of the direction of current through one of the windings of the IDO OI' flow through the field winding of the motor, as, for example, the field winding, to Wire the direction of rotation of the motor is re- 37, binding post 98, Wire 102, Contact bla e versed and the force exerted on the doors by 60, wire 93, contact blade 63, contact 6 ,W I'c the cable is in the reverse direction and 94, contact 65, wire 104, bind ng POEjt 1 moves the doors from their open to their wire 39, to and through the other W n g closed position, which operation continues of the motor, as, for example, the arm ure until the stud 28 engages the operating winding, to wire 38, binding post 99, Wife handle of the limit switch 29, at which time 103, contact 66, Wire 95, contact 6 Contact the operating circuit of the motor last traced blade 62, wire 92, binding pos W is opened at said limit switch and the limit to and through limit switch 30 to wire'46, switch 30 is again closed to permit the closbinding post 85, wire 89, binding post 8 ing of the opening circuit through the motor wire 34, back t0 line wire 32. Assuming that by the peratign 0f the olenoid 7 the doors 10 and 11 Were previously i their WVhen it is desired to interrupt either the closed position, the circuit connections of opening or l i tio f th doors the motor may be ass m to be Such that before the corresponding limit switch has for the direction of current flow just traced, been actuated, this may be accomplished by the motor is rotated in a direction to rotate pressing the push-button at any control the drum 19 over toward the Ob e ve as station, and the same operation may be em- 5 ShOWIl in 1, thus exerting it IEOI'CG HPOII ployed as 3, precautionary mqasure when the doors, moving them from their l e o desired to release all of the contact blades their open position, which condition concarried by the cylinder 55 from engagement tinues until the stud 28 engages the operatwith their corresponding contacts. Assuming handle of the limit switch 30, and when ing that the cylinder 55 is in either of its 20 this occurs the motor circuit above traced is operated positions as a result of the eneropened at said limit switch and the operagization of either the solenoid 74 or the soletion of the motor ceases. With the doors in noid 75, the following operation takes place their closed position, the circuit through the as a result of depressing the push-button wires 44 and 45 was open at the limit switch 115, current being caused to flow over the 29, but during the initial movement of the following path: hne w re 31, wire 33, binddoor 10 to its open position, the limit switch ing post 81, wire 87, wire 112, binding post 29 closed as a result of the construction above 108, wire 48, wire 116, push-button 115, wire described. thus connecting the wires 44 and 118, wire 50, binding post 106, wire 110,

45 at said switch. When it is desired to solenoid 80, wire 91, binding post 85, Wire 1:30

motion may again be begun in either direetion, depending upon which of the pushbuttons 113 or 114 is operated.

From the description above given it will be seen that my construction provides a simple means for controlling the operation of the motor employed to open and close doors from a distance, since the electrical control consists of few parts and that these parts are not liable to get out of order, but

on the other hand are simple and positive in operation.

While I have shown my invention in the particular embodiment above described, it will be understood that I do not limit myself to this exact construction, as I may employ equivalents thereof known to the art at the time of the filing of this application, without departing pended claims.

lVhat I claim is:

1. In a switching mechanism for a door operating system, the combination of a plurality of switch blades having alternate active positions, plurality of switch contacts, first and second electromagnetic devices for moving said switch blades to said active positions-as desired, circuit closers for controlling the operation of said electromagnetic deviees from a distance, mecha nism for moving all of said switch blades to an inactive position, a third electromagnetic device for operating said mechanism, and a circuit closer for controlling the operation o'l said third electromagnetic device from a distance.

2. In a switching mechanism for a door operating system, the combination of a 1'0- tatable carrier, switch blades mounted upon and insulated from said carrier, a base supporting said carrier, switch contacts mount, ed upon said base and insulated from each other, said switch blades and said. switch other, said switch blades and from the scope of the apcontacts being arranged in two sets, the switch blades of one set engaging the corresponding switch contacts when the switch blades of the other set are i'lisengaged from their contacts, a bar for operating the same, a solenoidconnected with each end of said bar for rotating said carrier in either desired direction, a forked lever pivotally mounted on the base for engaging the ends of said bar, and a third solenoid connected with said lever for rotating said carrier from either actuated position to its mid-position disengaging all of said switch blades from said switch contacts.

3.111 a switching mechanism for a door operating system, the combination oi a retatable carrier, switch blades mounted upon and insulated from said carrier, a base supporting said carrier, switch contacts mounted upon said base and insulated from each contacts being arranged in two sets, the switch blades of one set engaging the corresponding switch contacts when the switch blades oi' the other set are disengaged from their contacts, a bar secured to said carrier for operating the same, a solenoid connected with each end of said bar for rotating said carrier in either desired direction, a forked lever pivotally mounted on the base for engaging the ends of said bar, a third solenoid connected with said lever for rotating said carrier from either actuated position to its mid-position disengaging all of said switch blades from said switch contacts, and circuit closers for controlling the operation of said solenoids from a distance.

4-. In a switching mechanism for a door operating system, the combination of a plurality of switch blades having alternate active positions, a plurality of switch contacts, first and second electromagnetic devices for moving said switch blades to said active positions as desired, mechanism for moving all of said switch blades to an inactive position, and a third electromagnetic device for ope 'ating said mechanism.

In witness whereof I hereunto subscribe my name this 91th day of December, A. D.

BURT M. WARNER.

secured to said carrier said switch 

